Edsparr was at JP Morgan for 12 years, leaving in 2008 to help drive a push into securities and investment banking at Chicago hedge fund firm Citadel.

He became a director of Nomura International on January 22 and joins vice-chairman of public policy Sir Andrew Cahn and chairman Kieran Poynter, former chief executive of PwC, as non-executives on the board of the Japanese bank’s subsidiary, which handles sales and trading, investment banking, asset and principal finance, and corporate finance and private equity, according to Companies House and Financial Services Register filings.

A spokeswoman for Nomura confirmed Edsparr’s appointment.

Other directors of Nomura International include Jeremy Bennett, Nomura’s chief executive for Europe, Middle East and Africa.

Edsparr joined JP Morgan in 1996 and held various roles, according to a statement from Citadel in March 2008 announcing his hire as chief executive of its European operations and global head of its fixed income business.

Edsparr was promoted to global chief executive of Citadel’s securities unit the following year, but left the group in May 2010.

Citadel founder Kenneth Griffin, in an internal memo at the time, said he didn’t “see eye to eye” with Edsparr, citing differences about corporate strategy, according to The Wall Street Journal.